+The year 1409 marked a turbulent period in European history, dominated by religious strife. The [Council of Pisa](/wiki/Pisa_Council) convened in an attempt to heal the ongoing [Western Schism](/wiki/Western_Schism), which had divided the Catholic Church. This effort, however, complicated matters further, resulting in three rival popes and deepening the ecclesiastical crisis.
+## See also
+- [Middle Ages](/wiki/Middle_Ages)
+- [Papacy](/wiki/Papacy)
+- [Council](/wiki/Council)
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